• Website: http://static.lawrencehallofscience.org/kidsite/
• Grade level / age: Grades K-8
• Content area: All science subjects

Why we like it: Science resources specifically for elementary students are harder to come by, but those students want engaging content, too. This site has collections of activities and games, and a thorough section of professional development for science teachers of younger students.

• Website: https://www.learner.org/subject/science/
• Grade level / age: All grades
• Content area: All science subjects

Why we like it: Along with a lot of great professional development resources, Annenberg Learner has hundreds of interactives and videos on a variety of topics from Amusement Park Physics to Whooping Cranes.

• Website: http://www.nclark.net/
• Grade level / age: Middle and High School
• Content area: Biology and chemistry

Why we like it: Compiled by a teacher with nearly four decades of classroom teaching experience, this page has worksheets, lab ideas, puzzles, songs, and review activities on biology and chemistry common topics.

• Website: http://camillasenior.homestead.com/resources.html
• Grade level / age: Grades 6 and 8
• Content area: Biology, physics, and space science

Why we like it: Although it is visually simple, this site packs a bunch when it comes to resources. There are class activities, review sheets, presentations, and quizzes, all geared toward middle school science teachers.

• Website: http://www.bozemanscience.com/
• Grade level / age: High school
• Content area: All science subjects

Why we like it: Paul Andersen created hundreds of videos for this site, particularly focused on the AP science courses. These are excellent resources to help your students prepare for their exams.

• Website: http://www.chemcollective.org/
• Grade level / age: High School
• Content area: Chemistry

Why we like it: Chemistry can be the most difficult science topic for a lot of students. This site has tutorials, practice quizzes, and activities and virtual labs to help take some of the mystery out of the subject. These all make great alternatives to traditional student homework.

• Website: https://onlinebusiness.umd.edu/blog/data-analytics-tools-for-stem-teachers-students/
• Grade level / age: All grades, but best for High School
• Content area: Data science

Why we like it: Although not necessarily the first science discipline you might think of, data science is a growing field that incorporates scientific thinking, math, and computers to better make sense of the world. This guide from the University of Maryland gives teachers some resources on data science and why it deserves a place as part of the curriculum.

• Website: http://datanuggets.org/
• Grade level / age: All grades
• Content area: All science subjects

Why we like it: The activities on this site are based on real scientific research by real scientists and use the data they collected in their research. The activities guide students through analyzing and interpreting data and drawing conclusions from the information.

• Website: http://biologyinmotion.com/
• Grade level / age: High School
• Content area: Biology

Why we like it: Interactive biology activities can take a lecture on mitochondria from sleep-inducing to interesting. These flash activities primarily demonstrate basic biology concepts, but also includes vocabulary games and medical science interactives.

• Website: https://serc.carleton.edu/eet/index.html
• Grade level / age: Grades 9-12
• Content area: Earth System science

Why we like it: The Earth Exploration Toolbook takes activities and projects that are data-driven and puts them in the hands of teachers and students. All of the activities teach students through analysis and data exploration – two skills especially important in a science classroom.

• Website: https://earthhow.com/
• Grade level / age: All Grades
• Content area: Earth System science

Why we like it:  EarthHow has a great variety of Earth Science resources, from the oceans, to space and including biology and weather, too. The guides and articles break down complex concepts into small bites and usually include visual representations of the concepts, whether tables, charts, or images.

• Website: https://www.hhmi.org/biointeractive
• Grade level / age: high school
• Content area: All science subjects

Why we like it: With broadcast-quality short films, virtual labs, teacher guides, and more, there is truly an immense amount of valuable free resources for teachers here.

• Website: https://science.howstuffworks.com/
• Grade level / age: All grades
• Content area: All science subjects

Why we like it: A lot of interesting science education can come as a result of students asking questions about how things work and why. This site has thousands of videos and articles on every topic you can think of, from how suntans work to how different people perceive colors differently. This is a treasure trove of great videos to answer students’ burning questions and keep them asking about how stuff works.

• Website: https://www.purdue.edu/impactearth/
• Grade level / age: High School
• Content area: Space Science/ Astronomy

Why we like it: This is a super fun simulation of what would happen if various projectile objects impacted Earth. You can choose the diameter and density of the projectile, as well as the angle of impact and velocity, letting students get an understanding of how these factors play a role in crater formation – or the destruction of planets!

• Website: https://onlinemasters.ohio.edu/blog/k-12-stem-lesson-plan-guide/
• Grade level / age: K-12
• Content area: STEM General Education

Why we like it: This site, published by Ohio University, offers tips for teachers looking to write more complex and effective lesson plans for students in all areas of STEM teaching. There are also links to useful resources and information for teachers, as well as potential professional development opportunities through the university.

• Website: https://www.khanacademy.org/
• Grade level / age: High school
• Content area: All science subjects

Why we like it: Khan Academy knows how to take complex topics and break them down into videos that make it “click” for students. There are tons of resources for physics and biology AP courses, as well as topics as advanced as organic chemistry. 

• Website: http://www.kineticcity.com/
• Grade level / age: Grades 3-5
• Content area: All science subjects

Why we like it: Although this set of science games is a little on the old side, the mission aspect and ability for students to work together to defeat an evil villain if they are successful makes it engaging for students. This is a great resource for getting students to work on their science skills outside of the classroom.

• Website: http://www.kitchenchemistry.eu/
• Grade level / age: Middle and high school
• Content area: Chemistry

Why we like it: Making connections to real life is the key to engaging students in many cases, and Kitchen Chemistry does this really well. They provide experiments that demonstrate a variety of chemistry concepts that require only the objects you’d have in a standard kitchen, meaning students can see how to use chemistry in regular life.

• Website: https://www.lauracandler.com/files/science/#geology
• Grade level / age: Grades 5-8
• Content area: Geology and environmental science

Why we like it: Anytime experienced teachers are willing to share their materials, good things are bound to happen. On this page, Candler compiles free worksheets and web links that she uses and organizes them by the units in which they would be most useful.

• Website: https://learn.genetics.utah.edu/
• Grade level / age: High School
• Content area: Genetics, cell biology, evolution, health, and ecology

Why we like it: This is a beautifully presented resource site for students, featuring videos, interactive simulations, and text explanations. It is perfect for additional help for struggling students and/or reviewing the material at home.

• Website: https://middleschoolscience.com/
• Grade level / age: Grades 5-8
• Content area: All science subjects

Why we like it: This blog is written by a teacher and is full of great lesson plans and resources, particularly labs that are appropriate for the middle school classroom. The activities focus on everything from chemistry and earth science to life science and the subject in between.

• Website: https://www.nasa.gov/education/materials/
• Grade level / age: All grades
• Content area: All science subjects, but particularly space science and astronomy

Why we like it: What better resource to help teachers in science classrooms than NASA? This site has everything from lesson plans to posters to multimedia to games.

• Website: https://ncse.com/classroom-resources
• Grade level / age: All grades
• Content area: All science subjects, but mostly climate change and evolution

Why we like it: These are classroom-tested and, in some cases, award-winning classroom resources including lessons, tips, and web resources.

• Website: https://www.nsf.gov/news/classroom/
• Grade level / age: All grades
• Content area: All science subjects

Why we like it: The National Science Foundation is a well-regarded source of science information and research, so classroom resources from them are top-notch. The way they are organized by topic also makes it easy to navigate and find what you’re looking for quickly.

• Website: https://www.nsta.org/resources
• Grade level / age: All grades
• Content area: All science subjects

Why we like it: With a searchable database that goes back to 2006, the NSTA website has thousands of “freebies” for teachers and their classrooms. You can also find journal articles, book chapters, and more.

• Website: https://www.nextgenscience.org/teachers
• Grade level / age: All grades
• Content area: All science subjects

Why we like it: The NGSS is the basis for many of the standardized tests administered to students in the United States. This site as resources to help teachers ensure the testing standards are included in their lessons.

• Website: http://www.uky.edu/Projects/Chemcomics/index.html
• Grade level / age: Middle and High School
• Content area: Chemistry

Why we like it: This might be one of the most creative resources we’ve seen. By clicking on an element from the Periodic Table, you get a list of comic book pages that mention or involve an element. This goes much deeper than Iron Man – the page on oxygen is especially interesting.

• Website: http://www.periodicvideos.com/
• Grade level / age: High School
• Content area: Chemistry

Why we like it: Students like videos and these are certainly engaging. This group of university science professors record fires, explosions, and other visually interesting science experiments as a way to introduce and explain the properties of various chemical elements.

• Website: https://phet.colorado.edu/
• Grade level / age: All grades
• Content area: All science subjects

Why we like it: This site has tons of science simulations that can be sorted by grade level, topic, and even the device students are using to access them. For schools with tight budgets and a lack of equipment, these simulations are an excellent way to get students working hands-on with science topics.

• Website: https://www.plantingscience.org/
• Grade level / age: Middle and high school students
• Content area: Biology

Why we like it: Planting Science connects teachers and students with scientist mentors to help guide them through large-scale research projects. Students and teachers choose research questions and collect data with the help and guidance of those who work in the field, giving students access to role models, as well as an understanding of how people “do science” in real life.

• Website: https://populationeducation.org/
• Grade level / age: All grades
• Content area: Population science, ecology

Why we like it: The lessons here are unique and cover science subjects that are a little more difficult to find. There are great connections from population science to other disciplines, making them useful for teachers of a variety of subjects.

• Website: https://www.sciencebuddies.org/
• Grade level / age: All grades
• Content area: All science subjects

Why we like it: Science Buddies has lesson plans, science projects, and hands-on activities for teachers to use in their classrooms. There’s also a great section for parents, which allows students to continue their learning at home, as well.

• Website: https://www.sciencechannel.com/
• Grade level / age: All grades
• Content area: All science subjects

Why we like it: This channel, and its website, has lots of great content on a variety of real-world science topics. These videos are great to supplement your classroom lessons and show students how what they’re learning connects to real life.

• Website: https://www.sciencedaily.com/
• Grade level / age: All grades
• Content area: All science subjects

Why we like it: Part of what can sometimes be hard to do in a science classroom is show students how their lessons connect to real life. Science Daily posts research news on a wide variety of scientific fields, allowing teachers to find current, relatable content to make connections in the classroom.

• Website: http://sciencenetlinks.com/
• Grade level / age: All grades
• Content area: All science subjects

Why we like it: Science Netlinks was developed by the American Association for the Advancement of Science, and features science lessons and tools submitted by teachers and developed by scientists. There’s a great searchable database, as well as recommended lessons based on grade level or topic.

• Website: https://www.youtube.com/scishow
• Grade level / age: all grades
• Content area: all science subjects

Why we like it: This YouTube channel addresses all kinds of interesting questions and phenomenon that are science based, and makes it fascinating in the process. They touch on everything from “7 things we don’t know about the ocean” to “Why avocados shouldn’t exist” and do so in relatively short, easy-to-digest videos.

• Website: https://sharemylesson.com/
• Grade level / age: All grades
• Content area: All science subjects

Why we like it: There’s no reason to reinvent the wheel when it comes to common lessons. This site lets teachers share their lessons with one another, helping teachers of every grade level and subject find the best option for their class.

• Website: http://stellarium.org/
• Grade level / age: All grades
• Content area: Astronomy

Why we like it: This open-source planetarium allows you to show your students more than 177 million starts and more than 1 million deep-sky objects and can even be used with planetarium projectors.

• Website: https://teach.genetics.utah.edu/
• Grade level / age: High School
• Content area: Genetics, bioscience and health

Why we like it: This site has complete lesson plans, as well as workshops and professional development to help teachers bring these science topics to life in their classrooms. The curriculum index is thorough and full of great lessons and activities to use on topics like the science of addiction and how genetics is used in cloning.

• Website: https://serc.carleton.edu/teachearth/index.html
• Grade level / age: All grades
• Content area: Earth Sciences

Why we like it: This site has teaching materials, workshops, career development, and more for teachers of Earth Sciences. The themes and topics are broken down into a lot of detail, making it easy to find the specific information you need for your class.

• Website: https://evolution.berkeley.edu/evolibrary/home.php
• Grade level / age: All grades
• Content area: Evolution

Why we like it: From breaking down tree diagrams, to addressing misconceptions about evolution, this site does a great job of taking a somewhat controversial topic in science and providing teachers with plenty of lessons and help resources for students. There are also great “teacher’s lounge” areas, where teachers can ask questions and share information with one another.

• Website: https://undsci.berkeley.edu/
• Grade level / age: All grade levels
• Content area: All science subjects

Why we like it: This site has lots of interactive resources to really help students grasp the foundations of scientific topics. There are also great “teacher’s lounge” areas, where teachers can ask questions and share information with one another.